ISS Star Trails (26)Expedition 31 Flight Engineer Don Pettit relayed some information about photographic techniques used to achieve the images: “My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure.”

The Tesla Gun | dɸ/dtA bit of both. When no earth is nearby, it makes a very even fringe of tiny sparks around the toroid, plus a very pretty corona field that is damn near impossible to photograph. This sort of shows it:...

"Legislation comes in the form of bills which are essentially patches to the existing legal code....

"Legislation comes in the form of bills which are essentially patches to the existing legal code. Many different versions of a patch may float around to be debated, discussed, amended, etc., before a final version is applied to the "trunk". The process is extremely similar to how developers manage software changes, particularly in the open source world."

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